/Engine/Source/Runtime/Engine/Classes/GameFramework/RootMotionSource.h
Update contained Sources to state in matching sources from other group. Used for correcting root motion state when receiving authoritative state from server.
whether it successfully updated state
void UpdateStateFrom ( const [FRootMotionSourceGroup](API\Runtime\Engine\GameFramework\FRootMotionSourceGroup) & GroupToTakeStateFrom, bool bMarkForSimulatedCatchup )